Brake



j May 915, 192s.,

P. AsTu-:N

BRAKE Filed Nov. 8, 1925 5 Sheets-Sheet l .manu

ma u lI M l @Hoz/nu] P. BASTIEN I May 15, 1928.

BRAKE `Filed Nov. e, 1925 5 Sh'eets-sheet 2 Tic-3.50.

Tis. 5.

May 1.5

P. B STIEN BRAKE Filed Nov'. 8, i925 5 sheets-sheet 5 wwwa Patented May l5, 1928.

'FFIEL .'BRAKE.V

Application med'November 8, 1928. Serial No.l 673,461,r

This invention relates to vehicles and more particularly to brakes for steering wheels and has reference to that typeofjsteering wheel which is ivotally mounted at the end of a relatively xed axle. r vItis one of the objects of the invention to provide an improved formof brake operating mechanism that will be comparatively simple in construction, effective in operation and' that will not be detrimentally affected, as to its operation, by the steering movements ofthe vehicle.

A- further object of the invention is to provide an improved brake operating mechanism embodyin a rod slidable through the pivotal connection between the steering spindle and the axle in combination with a suitable cam for actuating the brake, to the end that the steering movements of the vehicle will not `affect the application of the brake and, on the other hand, the application of the brake will not, in any way, affect the steering.

Other objects of the invention and the features of novelty will beapparent from the following description taken in connec-4 tion with the accompanying drawings, of which:

Figure l is an axial section through a steering wheel having my invention applied thereto;

Fig. 2 is a vertical section on theline 2-2 of Fig. 1;

Fig. 3 is a detail section on the line 3-3 of Fig. 1;

Fig. 4 is a view similar to Fig. 2 but showin a modilication;

ig. 5` is a view similar to Fig. 1 but showing another form of the invention;

Fig. 5 is a detail sectionon the line 5-5 of Fig. 5;

Fig. 6 is a vertical section on the line 6-6 of Fig. 5; l

Fig. 7 is a view similar to Fig. 1 but showing still another form of the invention.

Fig. 7l1 is a fragmentary side elevation of parts shown in Fig. 7, with certain parts shown in section on the line a--a of Fig.. 7

Fi 8 is a section on the line 8 8 of Fig. $7,

Referring to the drawings, and more particularly to the form of the invention illustrated in Figs. 1, 2 and 3, 10 indicates a coinmon form of motor vehicle front axle which is provided with yokes 11 at its opposite ends to which the steering spindle member 12 is lconnected bya hollow pivot 13. The wheel spindle ofthe member 12 is indicated at 14 and a wheel 15 is mounted thereon by means of ball bearings 16 and 17. The wheel 15 carries a brake drum 18 secured thereto by bolts 19 in accordance withthe usual practice. There is a flange 2O on the member 12 to which a plate21, which covers the open side 'of thev brake drum 18,*is secured by the bolts 22. Brake shoes23 and 24 are pivotally mounted on the plate 21 and the bracket 25, on said plate, by means of the pins 26. The free ends of the shoes 23 and 24 carry the yantifriction rollers 27 which cooperate 'with a conicalI actuating cam 28 that is mounted on the the pivot 13.

From Fig. l ity will be observed that the lower end of a Arod 29 that extends through plane of the rod 29 is at an angle to the plane of the brake shoes 23 and 24 but the cam 28 engages with vthe rollers 27 at the intersection of these planes. f

Abearing bracket 30 is secured on the top of the yoke 1l and is split to receive the shaft 31 which carries the cam 32, this cam operatively engaging the` upper end of the rod 29, as clearly shown in Fig. 3. The ball 33 of a luniversal joint is carried by the bracket 30 and forms a connection between the shaft 31 and a shaft 34, these shafts being provided. with iingers engaging withv right angularly arranged grooves in the ball 33, to form a universal joint connection, in accordance with the common practice in making this type of universal joint.

T he shaft 34 is telescoped with a shaft 35 with which it has a splined connection, and the shaft 35 has a ball 36 on its inner end whichis supported' in a bearing 37 that is mounted on the frame 38 of the vehicle. As' is well known, the frame 38 has movement relative to the ,axl'e' 10 and the balls 33 and 36 provide for such relative movement. An arm 39 on the shaft I'35 is connected with the usual steering lmechanism onthe body of the vehicleV for the purpose of steering the wheell. Springs 40, each having one end connected with the spindle member 12, as indicated at 41, and having its other end connected with one of the brake slices, are provided for the purpose of withdrawingythe shoes from contact with the brake drum 18 and holding the rollers 27 in contact with the cam 28.

In the operation of the form ofthe invenwhich is y los 2.

l tion just described, the arm 39 is actuated to rotate the cam 32 which depresses the rod .,relveasejthe brakes the parts.

l29 and the cam 28 and spreads the brake shoesv into contact with the drum 18. The j movements of the wheel are not affecte' by the application of the brake shoes steerin to" the brake drum because, in the steering m'vements, the rollers 27 may travel around the cam 28 orthelatter, withthe rod 29, may 10 vided-for by the form of the contact with'v turn,such turning ofthe rod 29 -being pro.-

the'l ca-m 32. When the cam 32 is turnedtov the springs 40 will retract `"In the Aform of the invention illustrated in 4,.a single brake 42 is employed, one

end of this brake being pivotally connected y with a bracket 43, on the steering spindle member 44, by means of the pin 45.

The "member 44 also 4carries brackets 46 having rollers 47 thereon to engage with the brake 42l to hold the latter in position. Springs 4.48 and '49 are attached to the brake 42 for 1' withdrawing it from the brake Vdrum 18.

Thelbracket 43 also carries a roller 50 which 'contacts with one side of a cam 51`an'd a roller 52 on the free end'of the brake 42 rod 29.

In the operation of this form of -the invention, by depressing the rod 53 and the cam 51, the brake 42 may be expanded within the brake dr'um 18 and when the downward pressure on the rod 53 is relieved the cam and the brake will be retracted by the springs 48 and 49. The shape of the` cam 51l permits the rollers 50 and 52 to swing around it during the steering movements of the wheel or the rod 53 and the cam 51 are, as a whole, turned with the wheel, asin the modification previously described.

In the form of the invention illustrated in- -F igs. 5 and 6 the axle 54 has the yoke 455 to which the steering spindle member 56 is connected by ahollow pivot pin 57 This arrangement differs from that shown in Fig. 1 in that the axis of the pivot 57 is more nearly vertical but otherwise the construcf tions are similar. The wheel 58 carries the brake drum 59 With which the brake shoes 60 and 61 cooperate, these shoes being pivoted at 62 and 63, respectively, to the plate 64,l which closes the open side of the brake drum. The plate 64 is provided with a pair of laterally projecting lugs or brackets 65 in` which the members 66 and 67 are slid- A able. The member 65 is connected by a pivot 68 with the free en'd of the shoe 60 and the member67 is connected with the free end of theshoe 61 by a pivot69. The opposed ends of the members 66 and 67 are rovided with helical ca m surfaces 70 with w ich a cam 71 cooperates, this cam being mounted on a shaft `72 which issupported in the axial bores in the members 66 and 67. 'The cam.member 71 has an arm 73 thereon which projects through a slot 74'in the plate 64 and has its outer end in engagement with a rod 75 which is slidable in the pivot 57. A cam 76 engages' with the upper end of the rod 75 and is carried by the ball 77 of a universal loint. The ball 77 and the cam 76 are rotata ly mounted in the split lbracket 7 8 that is secured onthe top of the yoke 55. Ashaft 79 having a yoked end to engage with the ball 77 hasl a telescopic and splined connection with the shaft 80, and the shaft 80 has a yoke which engages a ball 81 of a universal joint that is supported in the bracket 82 on the frame 83. A shaft 84 is carried by the bracket 82 and has a yokedend engaging the ball 81 to form a universal joint connection with' the shaft 80, in `accordance with. the common usage. The shaft 84 has an arm' 85 secured thereon and this arm is connected in any suitable manner with a brakeI lever on the body of the vehicle. The universal joints 77 and 81 andthe telescoping connection between the shafts 79 and 80 permit freedom' of mfvenent of the frame 83 relative to the ax e 5 In the operation of the mechanism the ,y

cam 76 is'rotated by moving the arm 85', as will be readily understood, and the cam 76 will depress the rod 75 and rock the cam 71 to spread the brake shoes 60 and 61 against the interior o f the brake drumv 59. The connection between the rod 75 and the arm- 73 allows the steering movements of the Wheel without in any way affecting the brake.v When. the arm 85 is released ythe parts are retracted by a spring 86 which hasl its opposite ends connected to the brake shoes 60 and 61..

In the form of the invention illustrated in Figs. 7 to 9, a dierent form of cam isl employed and, in this case, the cam is in the form of a wedge 87 having a guide rod 88 thereon which projects through a boss 89 on, the plate 89, this plate being similar to the plate 64 with the exception that the lugs 65 are omitted.l A vspring 90 v4is arranged between'the boss 89 and the wedge 87 to depress'th'e latter.

receive the .rollers 92 on the free ends of the brake shoes 93, 94. The wedge 87 also has a slot 95 to receive the arm 96 of a lever The sides of the y wedge 87 are provided with grooves 91 to Y 97 that is pivotally mounted on the plate I 89. The lever 97 also has an arm 98 which meadow engages with the lower fend of the rod-75 an is actuated thereby. .The rod 75 Swill be actuated by any suitable mechanism such as either of those illustrated in Figs. 1 and 5. In -the operation of this form ofthe invention, thel cam 87 is raised by depressingA the rod 75 and this movement ofthe cam spreads the brake shoes 93 and 94. The brake shoes mayv be returned by -a`spring similar to the s ring 86, and when lthe pressure on the ro 7 5 is` relieved the spring 90 will depress the cam `87. vAs in the construction illustrated in Fig. 5, the loose ening spindle, a' wheel mounted on said spindle and having a brake drum, a brake cooperating with saidA drum' 'and anchored on saidspindle,- a cam for actuating said brake,

' a'rod extending through s'aid pivot and actu- J ment relative thereto, and a shaft having la ating said cam, a cam mounted on said axlev and cooperating with Vsaid rod' to move the vlatter axially of said pivot, a shaft mounted on said frame and having universal moveuniversal joint connection with the second mentioned cam and a telescopic .connection with the first mentioned shaft.

2. In aA vehicle, vthe `combination of .an axle, a steering spindle member, a pivot connecting said memberwith said axle, a wheel y mounted on said spindle and haviingV a brake drum, a brake anchored on said member and having a free end with an antifriction roller thereon, a cam cooperatingl with said roller to expand said brake, a lever mounted for rocking movement in the plane of the axis, of said pivot, and a rod movable axi ally through" said pivot and 'operatively engaging said lever. y 'i 3. In vehicles, the combination of an axle,

a steering spindlemember, a pivot connecting said member with said axle, a wheel mounted on said spindle and having a brake drum, a brake A.cooperating with said drum,

a Wedge member slidable between thel ends of said brake to actuate it, a lever pivotally mounted on said spindle member and hav'- ing one armconnected with saidv wedge member to actuate the latter, said lever hav` ing another arm `projecting Ainto alignment with said pivot, and a rod slidable through said pivot and operatively engaging said arm. l A In testimony whereof I aiiix vPAUL BAs'rniN my signature. A 

